They also point out a particular substance called polypropylene, as opposed to polycarbonate, that may be too much to remember at this hour of the morning, but polypropylene less likely to actually have the bisphenol A leech out.

Alternatively, he said, the recycler would grind up the plastic altogether and then skim the lighter (and more commercially valuable) PET and HDPE plastic away from the heavier polypropylene, which is then consigned to